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Tree ring dating and climate change

18-Jun-2015 18:30 by 8 Comments

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more A redwood sample in the lab that Dendrochronologist Allyson Carroll works in at Humboldt State University where she has been doing research on redwood tree rings to determine the potential effects of climate change on the growth of redwoods in Arcata, Calif. less A redwood sample in the lab that Dendrochronologist Allyson Carroll works in at Humboldt State University where she has been doing research on redwood tree rings to determine the potential effects of climate ...more Drawn pictures of redwood trees in the lab that Dendrochronologist Allyson Carroll works in at Humboldt State University where she has been doing research on redwood tree rings to determine the potential effects of climate change on the growth of redwoods in Arcata, Calif. less Drawn pictures of redwood trees in the lab that Dendrochronologist Allyson Carroll works in at Humboldt State University where she has been doing research on redwood tree rings to determine the potential ...

The ancient trees produced more wood over the past century than they have during any other time in their life, a stretch that dates back, in at least one case, a thousand years before the birth of Christ, according to a study released by the Redwoods and Climate Change Initiative.

The growth trend has actually accelerated over the past few decades, said the scientists from UC Berkeley and Humboldt State University who conducted the four-year study.

"It shows these trees are being impacted by something in the environment," said Emily Burns, director of science for Save the Redwoods League, the San Francisco nonprofit that is managing the initiative. That lengthens the growth season." The million study, funded by grants and donations, was the most intensive research project ever conducted on the giant trees.

The researchers climbed, poked and prodded 137 coast redwoods and giant sequoias on 16 research plots throughout the trees' geographic range.

Dendrochronologist Allyson Carroll poses for a portrait at Humboldt State University where she has been doing research on redwood tree rings to determine the potential effects of climate change on the growth of redwoods in Arcata, Calif. less Dendrochronologist Allyson Carroll poses for a portrait at Humboldt State University where she has been doing research on redwood tree rings to determine the potential effects of climate change on the growth of ...

more Dendrochronologist Allyson Carroll poses for a portrait at Humboldt State University where she has been doing research on redwood tree rings to determine the potential effects of climate change on the growth of redwoods in Arcata, Calif. less Dendrochronologist Allyson Carroll poses for a portrait at Humboldt State University where she has been doing research on redwood tree rings to determine the potential effects of climate change on the growth of ...

more Photographs of redwood trees on the doors of the lab that Dendrochronologist Allyson Carroll works in at Humboldt State University where she has been doing research on redwood tree rings to determine the potential effects of climate change on the growth of redwoods in Arcata, Calif. less Photographs of redwood trees on the doors of the lab that Dendrochronologist Allyson Carroll works in at Humboldt State University where she has been doing research on redwood tree rings to determine the ...

more Redwood sample cores in the lab that Dendrochronologist Allyson Carroll works in at Humboldt State University where she has been doing research on redwood tree rings to determine the potential effects of climate change on the growth of redwoods in Arcata, Calif. less Redwood sample cores in the lab that Dendrochronologist Allyson Carroll works in at Humboldt State University where she has been doing research on redwood tree rings to determine the potential effects of ...

more Redwood trees are seen in Richardson Grove State Park on August 12, 2013 in Garberville, Calif.

Dendrochronologist Allyson Carroll of Humboldt State University has been doing research on redwood tree rings to determine the potential effects of climate change on the growth of redwoods.

less Redwood trees are seen in Richardson Grove State Park on August 12, 2013 in Garberville, Calif.

Dendrochronologist Allyson Carroll of Humboldt State University has been doing research on redwood tree rings to ...

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